Sash-lock.



, I l "PATENTBD MAR.20,1906 W. A. DOUG-LAS.

sAsH LocK. APPLICATION FILED MAR.20, 1906.

, showing the lock WILLIAM A. DOUGLAS, o'F UTICA, NEW YORK.

SASH-LOCK.A l y Specification of Letters Patent.

Patented March 2o, 190e.

Application led March 20,1905.l Serial No. 251,061.

To all whom it may concern.-

Beit known that I, WILLIAM A. DOUGLAS, a 'citizenof the United States,residing at Utica, in the county of Oneida and State of New York, haveinvented certain new and useful Improvements in Sash-Locks, of which thefollowing is a specification.

This invention comprises an improvedform of sashlock described in myprevious application for patent, Serial N o. 226,434, filed September29, 1904 and the essential object of the invention is to provide adevice of the above-type embodying ageneral simplicity of construction,a novel arrangement of operating parts conducing to compactness extentnot heretofore attained.

The sash-lock constructed in accordance with this invention includes amovable catch andhandle' and peculiar connections between these partswhich enable the lock device to be made comparatively small wi thoutdecreasing the serviceability and substantiality of the same as a lockmeans.

' For a full description of the invention and the merits thereof andvalso to acquire a knowledge of the details of construction of the meansfor effecting the result reference is to be had to the followingdescription and accompanying drawings, in which-` Fi ure 1 is averticalY sectional view showing te invention as when applied to awindow-sash. Fig. 2 is a view in elevation,

mechanism, the rear or inner side ,of the casing being removed. Fig..

3 is a vertical longitudinal sectional view'. Fig. =-4A is a horizontalsectionalview taken on the line X XofFig. 8 Vlooking downwardly.

Fig. 5 is a view embodying a modiiicationU of the invention.

Corresponding and like 'parts are referred to in the followindescription and indicated .in all the views o? reference characters. f

The window-sash 1, to which the invention is shown applied, is f theverticallymovable type, and the lock mechanism which composesthisinvention may be mortised or otherwise secured to the sash forcoperation with the fixed catch 2, suitably secured to the i windowframe or casing.

The lock mechanism consists of a casing 3, one side of which isprovided' with a handopening 4, admittin of ready Amanipulation of thehandle 5, whic is mounted in said casing in the form of the inventionshown in the the drawings by the same `mg 3 In a manner which 4and thecatches 8 first gures of the drawings. Thehandle 5 hasdownwardlyfextending end portions. or members 6, which operate betweenthe inner and outer sidesy of the. casing 3, aording guide means fordirecting the handle'in its slidable movement within v,the casing." Aspring 7, preferably a flat spring, is'interposed between the upper sideof the handle 5 vand the upper plate ofthe casing`3, said springnormally holding the handle in such a position-so that the same Vispartially opposite thehand-opening of said casingin order that thehandlemay bereadily. actuated to operate catches 8, which areslidable'i'n. the

8 consist of plates disposed above the bottom -plate 'of the casing 3and'movable in opposite directions, the adjacent endportions'of the*platesor catches '8 being adapted to engage the iixed catch 2 atopposite sides of the latter. The catch 2 is of arrow-head shapesimilarto many at present in use. Movablecatches 8 are normally held inIengagement ."withV the catch 2 by means of coil-.springs 9 ,opposite .7olower portion of the casing 3. The catches ends of which arej'connected, respectivelyJ i. with the catchess, Thesprings 9 arearranged in spaced relation, so as .to `admit of ready enlgagem'ent ofthe iixed catch the movable catches.

The special connection between theH catches 8 and the handle 5consistsof lever devices, 'Y

the preferred forms 4of whichV are illustrated in In Figs. 1 to 4,'

the figures of the drawings. s l inclusive, lit is l designed touse.levers :10,

mounted 'upon .pintle members 1 .'1, with'v'thef' vlowerends of saidlevers entering slots'12 in the catch-plate 8. The uppen extremities ofv the levers 10 curve 13, and are arran 1'4, carried by t outwardly, as'shown -at edto be engaged cams e downwardly-extending end portions 6 ofthe handle 5.Y A supple-VV mental or inner casing 15 is located in themain lock-,casing 3 at the lower portion of the latter and forms acasing for the catch devices 8 and adjacentparts more particularly. Theinner casin at the upper side forms a closure for the lower ortion ofthe hand-opening and prevents fldreign matter from lodging in the lowerportion of the caswill be readily apparent.

Describing the operation of the construction above set forth, it will benoted that the s ring 7 and springs 9 normally hold the handile 5partially opposite the hand-opening 4 in engagement with the IOO IIO

i fixed catch 2. To raise or open the window,

Athe fingers are passed into the hand-opening 4, and pressure againstthe handle 5 will force the latter upwardly, moving the cams 14 in thesame direction and causing the latter to impart pivotal movement to thelevers 10, causing separating slidable movement of the catches 8. Theinitial movement of the handle thus disengages-the catches 8 from thecatch 2, and further pressure upon the handle will elevate or raise thesash of the window in an obvious manner.

The modification of the invention shown in Fig. 5 illustrates a casing3, in which a handle 16 is partially exposed, the hand-opening structureof casing being the same as before set forth. The handle 16 also has thedownwardly-extending portions 6a. In the modified construction it isdesigned to use bellcrank levers 17 instead of those describedhereinbefore. The levers 17 are suitably pivoted within the casing 3a,and one end of the levers is received in a recess or slot 18 in theadjacent end portions 6a of the handle, the opposite end of the leversbeing received in a similar recess or slot 19 in the adjacent catch 8.The catches 8 may be of the same form as before described. The use ofthe bell-crank levers economizes space to such an extent that the sizeof the lock device may be greatly reduced and rendered very compact,this being of great advantage in many instances, aswell as accomplishinga saving of material. It will be noted that in the construction shown inFig. 5 upward movement of the handle imparts pivotal movement to thelevers 17, which actuate the catches8 and cause separation of the latterand disengagement from the catch 2. The levers 17 are pivoted atapproximately the points adjacent the elbows thereof, and the slots oropenings 18 inthe.

portions 63L of the handle 16 are elongated, so that in the closingmovement of the sash 1 the catch 2 will automatically separate thecatches 8 in engaging therewith, and in such movement, because of theprovision of the elongated slots 18, the levers 17 are adapted to movepivotally without actuating the handle. rIhe catches 8 in theconstruction in Fig. 5, as well as in the construction in the remainingfigures of the drawings, are adapted to move independently of thehandle. In Fig. 5 the spring 7 shown in the other figures is dispensedwith, and said spring may or may not be used in the constructions,according to the desire of the manufacturer.

It will be noted that the levers 10 and 17 in the constructions of theinvention shown in the drawings operatively connect the end members 6and 6a of the handles 5 and 16, respectively, with the fixed catch 2,which is directly engaged by the movable catches 8.

Having thus described the invention, what is claimed as new is- 1. Inasash-lock, the combination of a handle having angularly-extend in g endmembers, movable catches, and connections comprising levers arrangedbetween the end meinbers of the handle and operably connecting thecatches therewith.

2. In a sash-lock, the combination of a casing, a handle arrangedtherein and provided with downwardly-extending vertical end portions,levers arranged in the casing in the space between the end portions ofthe handles having their upper ends curved toward the end portions ofthe handle, the end portions of the handle having cams projected fromthe inner sides thereof to engage the upper curved portion of the leversto impart pivotal movement to said levers, catches slidably mounted inthe casing and engaged by the lower end portions of the levers, and aixed catch adapted to be engaged upon opposite sides by the movablecatches.

3. In a sash-locl,the combination of a casing, a handle mounted therein,and embodying angularly-extending end members, levers arranged betweensaid end members, catches movable with said levers, and a fixed catchadapted for operable connection with the catches of said levers.

In testimony whereof I aflix my signature in presence of two witnesses.

WILLIAM A. DOUGLAS.

Witnesses:

EDWARD G. GROGAN, WILLIAM FARRELL.

lL. s]

